Blank for and method of making fuse-bodies



C. G. HEIBY J. BURKAM, D. E. UNDQUIST, F. L. RI

E. w. ALLEN Am) a. LAU. I

BLANK FOR AND METHOD OF MAKING BODIES.

APPLICATION FILED JAN-17, I9l8.

Patented Oct. 11, 1921.1"

John Bur/ram tbehe" Dav 'c/ m wj-n M attouu 6 PATENT GFHQE.

CARL Gt. HEIBY, JOHN B'URI IAIii', DAVID E. LINBQUIST, L. BIGGIN, EBENEZEB W. ALLEN, AND BZCILARD LAU, OF SARIJIA, ()N'LZARIQ, CANELDA, ASSIGNORS, BY MESNE ASSIGNMENTS, T0 .TH'UELLER METALS CDMPAN'SZ', 033 PORT HURON, MICHIGAN, A

COR0RATION OF MICHIGAN.

BLANK FOR AND METHOD OF IJIAKING FUSE-301E338.

Specification of Letters Patent.

Application filed January 17, $18. Serial No. 212,226.

To all whom it may concern.

Be it known that we, CARL G. HnIBY, JOHN BURKAM, Davin E. Lmnoursr, Felon L. lire- GIN, Ennnnznr. JV. ALLEN, and Biol-Linn Lao, all citizens of the United States, except ALLEN, a subject of Great Britain, residing at Sarnia, in the county of Lambton and Dominion of Canada, have invented new and useful Improvements in Blanks for and Methods of Making Fuse-Jodies, of

which the following is a specification.

The present invention relates to improvements in forgings, and methods finishing the same, and as herein disclosed is shown as applied to forging-s for fuse bodies, such as are used in arming shells, these fuse bodies carrying fuses of any desired type, not uncommonly of the type known as time fuses.

it has for its object to provide a body which is forged into substantiallyits final form and which is so fashioned that it may be readily chucked in a lathe or other finishingmachine when it is subjected to machining; and finishing.

By the practice of our invention the do lay, expense and waste incident to com pletely machining; the slugs or stock from which the final fuse body is made, is done away with, so that production is increased, waste largely eliminated, and cost of mak ing is very substantially reduced.

While we l'lil-VQ-dlSClOSBCl in the accompanying drawings several types of forgino's, it will be understood that we do not restrict our invention to the specific embodiment shown, as it is obvious that the shape of the fuse bodies may be varied without departing from the principle of our invention, and,

furthermore, the invention may be practised in connection with articles other than the fuse bodies herein shown.

In the drawings herewith:-

Figure 1 is a perspective view of the stock or slug from which the blank is forged, and these slugs may be produced, of course, in any desired way, and of the proper dimensions for the work in hand.

Fig. 2 is a view in side elevation of a fuse body forged from the slug; shown in Fig. 1.

Fig: 3 is a view in vertical section of the forging shown in Fig. '2.

1: 4- is a view in side elevation of a finished fuse body formed from the forg- 111g shown in Figs. 2 and 3.

Big. 5 is a view in vertical section of the finished body shown in Fig. l, illustrating conventionally the armingpassages and channels to receive the fuse elements.

6 is a view in side elevation of a slightly different form of forging.

fig. 7 is a view in side elevation of a portion of the blank showing the chucking surface arranged between the top and base of the conical portions.

Referring to the drawings by numerals, like numbers indicating like parts in the several views, 10 indicates the slug or stock from which the forgings may be conveniently formed. Thus slug 10 is shown, in the present instance, as cylindrical, and it may be formed in any desired way, being of the dimensions necessary to provide stock enough for the'particular fuse body which is to be formed therefrom. The said slug 10 is heated to the desired temperature, and

Fig. 2, with a coned portion 11, a cylindrical upper portion 12, and a substantially cylindrical lower part 13 of less-diameter than the portion 11. The action of the forging press upon the slug; 10 is such that while it brings it to substantially the form shown in F 2 ,there will be a small amount of excess metal in the form of a projecting circular in 13 (shown in dotted lines in Fig. 2), which, in the present instance, projects from the forging at substantially the bottom of the cone portion 11, although its location may *sry, as it is dependent on the particular relation of the press members. This fin 13 will, of course, be trimmed off, and this may be readily and economically done, as the metal is thin at the point of juncture of the fin with the body, and these trimmings can be remelted and utilized without any" appreciable loss. It will be seen that the forging shown in'Fig. 2 has Patented Oct. 11, 1on1.

12 of the body a recess 14, and the bottom portion 13 has a recess 15, and these forged recesses materially reduce the labor of machining, of cutting out on lathe, or other metal working machine, the material which must be removed to provide these necessary carities. V

The forging shown in Figs. 2 as stated, substantially at its final form, and furthermore, it is of such contour that either the portion 12 or the portion 13 may be readily inserted and held in the chuck of the finishing machine, for boring and finish: ing operations.

t will be seen that the conical section 11 of the forging is, as stated, of substantially x the final form in the finished body, but the forging may be readily held in the chuck of'the finishing llllClllllGf-Ol the operations which are necessary on the bottom portion 13', by means of the cylindrical portion'12,

and the lower part 18 may be used a chucking surface when the opposite end of the forging is to be finished. Afterthe several finishing operations to which the article is subjected have been completed, it will have been brought to the final form, except for the cylindrical portion 12, and this cy lindrical portion will then be machined off along the dotted line indicated in Fig. 2,

soxas to complete the conical body portion 11, as appears in thefinished forgingFig;

l, and it is apparent that the amount of machining necessary to remove this small section is very slight, and, furthermore, that there is but little waste in connection with this finishing operation.

It will be observed that the cavity 14, which is forged in the top of thecone, is of substantially the size and area ofthe screwthreaded seat, so that the necessity of maohining this portion out is eliminated. The

same is true of that cavity 15 formed in the bottom portion 1.3 of the for In Fig. 6 is shown a slightly different.

form of forging from that snown in. the other views. l l hlle of the general outline of that bodyheretofore"described, in that it has a conical portion lfiand a bottom portion 17, the chucking surface is at the Jase of the cone 16 instead of atits top, as in the other forms, this chucking portion 18 being shown as cylindrical and serving as a convenient gripping means for the chuck during the finishing operations on the bottom .tion 17. Excepq for the shifting of the cylindrical surface 18 from the top of the co e to the bottom, the forging will be as heretofore described, with the. forged recesses in the top and bottom thereof, as indicated in dotted lines. After the several finishing operations, necessary to the forma tion of the fuse body, are completed the chucking surface 18 will be machined 05 to as they do away with the necessity and 8, is,

the blank has beensubject and 3, the surface 12 is at the top'of the coned portion; while in Fig. 6, it is at the base of this cone. It will be obvious that this cylindrical chucl'ing surface may be conveniently arranged at any point along the cone and fulfil the requirements. For ex ample, in Fig. 7, there is indicated a chucksurface 18 whlch is between the top and bottom of the cone portion 16, and we do not, therefore,hm1t ourselves to any particular location of this chucking surface lengthwise the'cone, as it may be variously disposed thereon w1th good esults,

in the foregoing descr ptmn the word forgin has been used in referring to the article in question, but it will be understood, I as stated at the outset, the body may be formed by casting instead of forging, without departing from the invention set forth.

Furthermore while we have shown the chucking surfaces in the disclosures herein substantially cylindrical in form, it will evident that the invention is nOt limited making this part of any particular form, and still be within the range of'our invention. 7

El e claim 1 7 hits a new' article of manufacture, a blank for fuse bodies and the like having between its ends a chucking surface which is adapted to be machined off or finishediafter ed to other finishing operations;

2. As a new article of manufacture, a blank for fuse bodies having a portion shaped to substantially conical form, and provid-d with a chucking surface removed from the tip of said conical portion, which chucking surface is adapted to be machined off or finished after the forging has been subjected to other finishing operations.

The method of forming fuse bodies which consists in forging a body with a por' tion thereof of substantially the conical shape of the finished body, and with a chucking surface adjacent the base of the cone; sub ecting said body to finishing operations;

and afterward machining off said chucking surfaceto complete the cone.

4; The method of forming fuse bodies which consists in, forging a body with a portion thereof of substantially the conical shape of the finished body, and with a cylindrical chucking surface removed from the end of the cone; subjecting said bodyto finishing operations; and afterward machining off said cylindrical chucking surface to complete the'cone.

5. The method "of forming fuse bodies which consists in forging a body with a por- In testimony whereof we have hereunto tion thereof of substantially a conical shape set our hands.

of the finished body and With a cylindrical CARL G. HEIBY. chucking surface located at apoint removed JOHN bURKAM.

5 from the apex of the cone; subjecting said DAVID E. LINDQUIST.

body to finishing operations; and afterward FRED L. RIGGIN. machining off said cylindrical chucking sur- EBENEZER WV. ALLEN.

face to complete the cone. RICHARD LAU. 

